Measuring instrument



Oct. 12 ,1926; 1,602,882

L.-w. 'CHUBB MEASURING. INSTRUMENT Filed Se t. 25. 1922 INVENTOR Lew/S Warrlhgfon Chubb.

WITNESSES:

v ATTORNEY Pla ma be. 12, 1926. I

UNITED STAT S LnwIs w. cause, or nnonwoon, ram:

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SYLVANIA, ASBIGNOB 10 WNITINGHOII ELECTRIC 6: MANUFACTURING COMPANY, A' OORIORL'IION' OIPINNQILVJ-NIL musunmc I i Application filed leptember My invention relates to alternating-ourrent systems and devices and particularly to methods of, and means for, measuring or utilizing the differential effects between alternating-current circuits fed. from different sources.

One object of my a method of, and means for, measurin or utilizinga differential efiect'between a ternating-current-circuits fed from difierent sources.

Another object of'my invention is to provide a simple and expeditious means for determining the difference between the peak-' voltage values oftwo alternating-current circuits, irrespective of the frequencies or phase relations thereof..

In practicin method of, an means for, determining or utilizing the difference between the peak voltages of different alternating-current circuits, in which the voltages are converted into direct or continuous voltages and so combined as to utili'zation'of a resultant voltage.

The single figure of .the accompanying drawing is a diagrammatic view of a device or system embodying niy invention, showing a preferred means for practicing the same.

The means, illustrated, for carrying m' invention into effect comprises, in genera two sources" 1 and 2 of alternating-current supply, hot-cathode converters 3 and 4, condensers 5 and 6, resistors Tend 8 and a translating device or voltmeter 9.

The alternating-current sources 1 and 2 are connected to a three-conductor circuit comprisin an intermediate conductor 10 and outsi e conductors 11' and 12. The hotcathode converter 3 is connected, in series relation with the condenser 5, between the conductors 10 and 11 and, similarly, theconverter 4 isconnected, in series relation with the condenser 6, between the conductors 10 and 12. The resistors 7 and 8 are connected in shunt relation to the condensers 5 and 6, respectively. The voltmeter 9, or other means responsive to the difference between charges in the condensers 5 and 6, is connected across the condensers 5 and 6.

In operation, alternating currents from the sources 1,a1id 2,are convertedor "transformed into direct currents bythehotcathode converters 3 and-1. The direct curinvention is to provide my invention, I provide a permit the, determination or msrnunm.

as, ma. semi mimics.

rents are imfiressed on' the condensers 5 and 6 whlch wi consequently, be char ed in accordance with the peaksvoltage va ues of the sources 1 and voltmeter 9 will actuated in accordance withthe difference etween the eak.-voltage values of the sources 1 and 2. lie resistors 7 and 8 are provided to slowly discharge the condensers 5nd 6 when the voltage of the sources 1 and 2 is reduced.

7 By my invention, a simple and effective means is obtained for measuring the difierences of peak-voltage values of two alternating-"current sources, which is independent of the frequency or phase relation of the sources.

While I have shown and described a preferred form of my invention, it is to be understood that various changes and modifications may be made therein withoutdeparting from the spirit and scope thereof and I desire, therefore, that only such limitations be laced thereon as are indicated by the a pen ed claims.

I c aim as my invention:

1. In an alternating-current measuring device, the combination with a plurality of alternatingscurrent circuits, of means auto- 2, respectively. Thus, the

matically responsive to differences in the I alternating-current circuits, of means for convertin voltages from the circuits into direct v0 tages, and means automatically actuated by said direct voltages directly in accordance with differences in peak values thereof.

3. In an alternating-current measurin device, the combination with a plurality o alternating-current circuits, of means for convertin voltages from the circuits into direct vo tages, translating means subject to said direct voltages, and means automaticall actuated by said translating means direct y in accordance with differences in peak values of said direct voltages. 3

4. In an alternating-current measurin device, the combination with\a plurality o alternating-current circuits, of means for convertiu voltages from the, circuits into direct vo tages, said direct volta storage means subject to Y and means automatically actuated bysaid storage means directly in accordance with diflerenc'es in peak values of said direct voltages.

5. The combination with a pluralit of alternating-current circuits, of means or converting current from the circuits into direct current, condensers subject to said direct currents and means responsive to difierences in the voltage charges 1n said condensers.

6.. In an alternating current measuring device, the combination with-a plurality o alternating-current circuits, of means for measuring differences 1n the peak-voltage values thereof, including means for converting current from the circuits into direct currents; condensers subject to said direct currents and means responsive to voltage char es in said condensers.

7 11 an alternating-current measurin device, the combination with a plurality o alternating-current circuits, of means for measuring difierences in the peak-voltage values thereof including means for converting current trom the circuits vinto direct currents, condensers subject to said direct currents and means responsive to differences in the voltage charges 1n said condensers.

8. In an alternating-current measuring device, the combination with a plurality of alternating-current circuits of means for measuring differences in the peak-voltage values thereof including means for converting currents from the circuits into direct currents, condensers subject to said direct currents, and means forslowly discharging saidcondensers.

9. In an alternating-current measurin device, the combination with a plurality o alternating-current circuits, of means for measuring difi'erences in the peak-voltage values thereof, including means for converting currents from the circuits into direct currents, indicating means, condensers subject to said direct currents, and means for slowly discharging said condensers.

10. In an alternating-current measuring device, the combination with a three-conductor alternating-current circuit, of a.

1,-eoa,sea I a outside conductor and the intermediate conductor, and means connected in shunt to each condenser.

12. In an alternating-current. measuring device, the combination with a three conductor alternating-current circuit, of a source of alternating current on each side of the intermediate of said conductors connected between said conductor and the adjacent outside conductor, acondenser and means for converting alternating current into direct current connected in series between each outside conductor and the intermediate conductor, and indicating means connected in shunt to said condensers. K,

13. In an alternating-current measuring device, the combination with a three-conductor alternating-current circuit, of a source of alternating current on each side of the intermediate of said conductors connected between said conductor and the adjacent outside conductor, a condenser and means for converting alternating current into direct current connected in series between each outside conductor and the intermediate conductor, indicating means connected in shunt to said condensers, and a resistor connected tember, 1922. s

* LEWIS W. CHUBB. 

